CN201534865U - Insert tube for RH refining - Google Patents
Insert tube for RH refining Download PDFInfo
- Publication number
- CN201534865U CN201534865U CN2009202038065U CN200920203806U CN201534865U CN 201534865 U CN201534865 U CN 201534865U CN 2009202038065 U CN2009202038065 U CN 2009202038065U CN 200920203806 U CN200920203806 U CN 200920203806U CN 201534865 U CN201534865 U CN 201534865U
- Authority
- CN
- China
- Prior art keywords
- tubular stinger
- refining
- pushing
- slag
- inclusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007670 refining Methods 0.000 title claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Images
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model relates to an insert tube for RH refining, which is provided with a slag blocking bulge with the cross section shape of ellipse, semiellipse, circle, semicircle or polygon on the inner wall of the insert tube. The device has simple structure, so that the inclusion in the molten steel is bonded and aggregated into a large block on the slag stopping protrusion, or the inclusion is adhered on the slag stopping protrusion and does not move, or the large block of the inclusion aggregated substance floats upwards under the action of buoyancy and molten steel impact, thereby achieving the purpose of purifying the molten steel.
Description
Technical field
The utility model relates to a kind of steel-making equipment, particularly relates to a kind of RH refining tubular stinger.
Background technology
RH purified molten steel will carry out vacuum cycle, operations such as deoxidation alloying, so inclusion mainly contains two sources, the one, the refractory materials that contacts in the molten steel working cycle melts the external inclusion that decreases and produce, the 2nd, the A12O3 that deoxidation produces, the endogenous inclusion that SiO2 etc. are tiny.At present, usually adopt after refining finishes and molten steel is carried out the inclusion that stirring method removes the generation of RH refining process with argon gas, but be not easy to remove very much at the tiny endogenous inclusion of RH refining process, the molten steel inclusion removes can not have a strong impact on steel quality only.
Summary of the invention
The utility model has overcome deficiency of the prior art, provides a kind of simple in structure, assists in removing the RH refining tubular stinger of impurity in the molten steel.
In order to address the above problem, the utility model by the following technical solutions:
A kind of RH refining tubular stinger is provided with the pushing off the slag projection on the tubular stinger inwall.
The cross-sectional shape of described pushing off the slag projection can be ellipse, half elliptic, circle, semicircle or Polygons.
The height A of described pushing off the slag projection on vertical tubular stinger tube wall direction is 1.5%～25% of tubular stinger internal diameter.
40% of shortest distance B≤tubular stinger length between two adjacent pushing off the slag bump bottom ends.
The width C of bottom surface the widest part of described pushing off the slag projection is 0.5%～40% of a tubular stinger length.
The bottom of tubular stinger inwall pushing off the slag projection bottom and the shortest distance D on tubular stinger base are 0.5%～40% of tubular stinger length.
Compared with prior art, the beneficial effects of the utility model are:
Inclusion in molten steel from the utility model tubular stinger through out-of-date, can run into tubular stinger inwall pushing off the slag projection, tiny inclusion is caught by the pushing off the slag projection and is assembled on the pushing off the slag projection and grow in strength, perhaps stick to top motionless, reach the effect of removing inclusion, perhaps under the impact force action of buoyancy and molten steel, break away from the pushing off the slag projection and be involved in molten steel once more, because its granularity increases, in the RH refining process or in the Argon process of refining treatment end back, can access sufficient come-up, reach the purpose of pure molten steel.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
A kind of RH refining as shown in Figure 1, is provided with a plurality of cross-sectional shapes and can be ellipse, half elliptic, circle, semicircle or polygonal pushing off the slag projection 2 with tubular stinger 1 on tubular stinger 1 inwall.The height A of pushing off the slag projection 2 on vertical tubular stinger 1 tube wall direction is 1.5%～25% of tubular stinger 1 internal diameter.40% of shortest distance B≤tubular stinger 1 length between two adjacent pushing off the slag projection 2 bottoms.The width C of bottom surface the widest part of pushing off the slag projection 2 is 0.5%～40% of tubular stinger 1 length.The bottom of tubular stinger 1 inwall pushing off the slag projection 2 bottom and the shortest distance D on tubular stinger 1 base are 0.5%～40% of tubular stinger 1 length.
Embodiment one
Be 660mm below with the internal diameter, length is that the refining tubular stinger 1 of 900mm is specifically set forth the utility model for example.
As shown in Figure 1, on tubular stinger 1 inwall, be provided with the semicircular pushing off the slag projection 2 of a plurality of cross-sectional shapes.The height A of pushing off the slag projection 2 on vertical tubular stinger 1 tube wall direction is 50mm.Shortest distance B between two adjacent pushing off the slag projection 2 bottoms is 100mm.The width C of bottom surface the widest part of pushing off the slag projection 2 is 50mm.The bottom of tubular stinger 1 inwall pushing off the slag projection 2 bottom and the shortest distance D on tubular stinger 1 base are 100mm.
Claims (6)
1. a RH refining tubular stinger is characterized in that, is provided with the pushing off the slag projection on the tubular stinger inwall.
2. a kind of RH refining tubular stinger according to claim 1 is characterized in that the cross-sectional shape of described pushing off the slag projection can be ellipse, half elliptic, circle, semicircle or Polygons.
3. a kind of RH refining tubular stinger according to claim 1 is characterized in that, the height A of described pushing off the slag projection on vertical tubular stinger tube wall direction is 1.5%～25% of tubular stinger internal diameter.
4. a kind of RH refining tubular stinger according to claim 1 is characterized in that, 40% of the shortest distance B≤tubular stinger length between two adjacent pushing off the slag bump bottom ends.
5. a kind of RH refining tubular stinger according to claim 1 is characterized in that the width C of bottom surface the widest part of described pushing off the slag projection is 0.5%～40% of a tubular stinger length.
6. a kind of RH refining tubular stinger according to claim 1 is characterized in that, the bottom of tubular stinger inwall pushing off the slag projection bottom and the shortest distance D on tubular stinger base are 0.5%～40% of tubular stinger length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202038065U CN201534865U (en) | 2009-09-30 | 2009-09-30 | Insert tube for RH refining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202038065U CN201534865U (en) | 2009-09-30 | 2009-09-30 | Insert tube for RH refining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201534865U true CN201534865U (en) | 2010-07-28 |
Family
ID=42534647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202038065U Expired - Fee Related CN201534865U (en) | 2009-09-30 | 2009-09-30 | Insert tube for RH refining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201534865U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045807A (en) * | 2011-10-12 | 2013-04-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Vacuum circulation degassing insert tube |
-
2009
- 2009-09-30 CN CN2009202038065U patent/CN201534865U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045807A (en) * | 2011-10-12 | 2013-04-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Vacuum circulation degassing insert tube |
| CN103045807B (en) * | 2011-10-12 | 2014-05-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Vacuum circulation degassing insert tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |